ASTM C1745/C1745M-11

Standard Test Method for Measurement of Hydraulic Characteristics of Hydrodynamic Stormwater Separators and Underground Settling Devices

SIGNIFICANCE AND USE
Each device has unique flow patterns and turbulence characteristics. In addition, each device exhibits a wide range of efficiencies as discharge, particle size, particle density, and flow viscosity (that is, water temperature) change. The testing procedure in Section 7 will help develop the parameters necessary to input into a function that describes the performance of a device under a wide range of application conditions.
SCOPE
1.1 This test method concerns measurement of selected hydraulic characteristics of hydrodynamic separators and underground settling devices critical to their function as stormwater treatment devices.
1.2 Units tested shall be of a size commonly manufactured, not a scale model.
1.3 As each stormwater treatment device is unique in design, so are its hydraulic characteristics (flow versus head and loss coefficients). A sufficient number of accurately measured data points are needed to define properly the hydraulic characteristics of each test unit. Therefore, it is imperative that the unit setup and subsequent testing methodologies be well defined and executed to ensure accurate flow and elevation data.
1.4 This test method addresses gravity flow operation only. It does not address performance of units operating under pressurized conditions.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 14-Sep-2011
• ICS: 13.060.30 - Sewage water
• Technical Committee: C27 - Precast Concrete Products
• Drafting Committee: C27.70 - Precast Concrete Products for Stormwater Management

Relations

• Referred By: ASTM E3373-23 - Standard Test Method for Scour of Hydrodynamic Separators and Settling Devices
• Effective Date: 15-Sep-2011
• Referred By: ASTM C1893-23 - Standard Practice for Laboratory Performance Verification of Hydrodynamic Separators for the Treatment of Stormwater Runoff
• Effective Date: 15-Sep-2011

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C1745/C1745M − 11
Standard Test Method for
Measurement of Hydraulic Characteristics of Hydrodynamic
1
Stormwater Separators and Underground Settling Devices
This standard is issued under the fixed designation C1745/C1745M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D3858 Test Method for Open-Channel Flow Measurement
of Water by Velocity-Area Method
1.1 This test method concerns measurement of selected
D4409 Test Method for Velocity Measurements of Water in
hydraulic characteristics of hydrodynamic separators and un-
Open Channels with Rotating Element Current Meters
derground settling devices critical to their function as storm-
D5089 Test Method for Velocity Measurements of Water in
water treatment devices.
Open Channels with Electromagnetic Current Meters
1.2 Units tested shall be of a size commonly manufactured,
D5242 Test Method for Open-Channel Flow Measurement
not a scale model.
of Water with Thin-Plate Weirs
1.3 As each stormwater treatment device is unique in D5389 Test Method for Open-Channel Flow Measurement
by Acoustic Velocity Meter Systems
design, so are its hydraulic characteristics (flow versus head
and loss coefficients). A sufficient number of accurately mea- D5413 Test Methods for Measurement of Water Levels in
Open-Water Bodies
sured data points are needed to define properly the hydraulic
characteristics of each test unit. Therefore, it is imperative that D5640 Guide for Selection of Weirs and Flumes for Open-
Channel Flow Measurement of Water
the unit setup and subsequent testing methodologies be well
3
defined and executed to ensure accurate flow and elevation 2.2 ASME Standard:
data. MFC-3M Measurement of Fluid Flow in Pipes Using
Orifice, Nozzle, and Venturi
1.4 This test method addresses gravity flow operation only.
It does not address performance of units operating under
3. Terminology
pressurized conditions.
3.1 Definitions of Terms Specific to This Standard:
1.5 The values stated in either SI units or inch-pound units
3.1.1 inlet (or outlet) rounding, n—radius of fillet at inside
are to be regarded separately as standard. The values stated in
pipe junction with separator structure.
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining
4. Summary of Test Method
values from the two systems may result in non-conformance
4.1 This test method describes procedures and equipment
with the standard.
required to measure the hydraulic characteristics of hydrody-
1.6 This standard does not purport to address all of the
namic separators and underground settling devices used for
safety concerns, if any, associated with its use. It is the
treating stormwater runoff.
responsibility of the user of this standard to establish appro-
4.2 Other standards that may be useful to reference include:
priate safety and health practices and determine the applica-
Test Methods D3858, D4409, D5089, D5242, D5389, D5413,
bility of regulatory limitations prior to use.
Guide D5640, and ASME MFC-3M (see Section 2).
2. Referenced Documents
5. Significance and Use
2
2.1 ASTM Standards:
5.1 Each device has unique flow patterns and turbulence
characteristics. In addition, each device exhibits a wide range
1
This test method is under the jurisdiction ofASTM Committee C27 on Precast
of efficiencies as discharge, particle size, particle density, and
Concrete Products and is the direct responsibility of Subcommittee C27.70 on
flow viscosity (that is, water temperature) change. The testing
Precast Concrete Products for Stormwater Management.
procedure in Section 7 will help develop the parameters
Current edition approved Sept. 15, 2011. Published October 2011. DOI:
10.1520/C1745_C1745M-11.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from American Society of Mechanical Engineers (ASME), ASME
Standards volume information, refer to the standard’s Document Summary page on International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
the ASTM website. www.asme.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1745/C1745M − 11
necessary to input into a function that describes the perfor- of each test. The average temperature shall be used in data
mance of a device under a wide range of application condi- reduction and reporting.
tions.
NOTE 2—Tests may be run outside of specified temper
...